Michael Crabtree did it twice. Then Frank Gore copied him, albeit only once. For throwing footballs into the stands after their touchdowns Sunday, each player was fined $10,500 for safety violations, the league announced Friday.

The fines shouldn’t come as a surprise. When Crabtree celebrated in such fashion, Fox Sports rules analyst Mike Pereira tweeted that league policy dicates a $10,000 fine would be forthcoming.

The reason: Throwing a ball into the stand creates a potential crowd control problem and thus a safety issue. However, if a player hands the ball or tosses it to a particular fan, that is allowed.

Good thing that policy wasn’t in effect for the 49ers’ public practice during training camp at Candlestick Park, when fans threw multiple footballs onto the field for Randy Moss to autograph. Moss signed those balls and threw them randomly into the crowd, causing a bit of chaos.